Food poisoning no insurance

First, i know I’m an idiot. Second, it’s my first day with this sickness so I needed to consult Reddit before doing anything drastic. I’m a solo backpacker from the US and I’m on Koh Tao at the moment. I have a pretty severe case of food poisoning as I’ve been vomiting, sweating, and having pure liquid diarrhea (no blood yet thank god) for about 9-10 hours. I can’t keep any food down and water is a maybe as well. I’ve been drinking ginger ale for about 30 min now and that doesn’t seem to be coming up soon (updates to come). Should I go to a doctor anyway and brave the medical costs? Anybody have an estimate of how much it’s gonna cost for something like this? Or Should I take a flight home because I’m screwed and it would be cheaper just to take a flight to the US from here and get treatment where I have insurance?

Update: went to the pharmacy and told them i had food poisoning. Pharmacist gave me antibiotics for 5 days and said go to hospital if it doesn’t get better after that. Also got some Tylenol. 350 Baht. I’m already feeling a bit better today. Thanks everyone!